Increase data node volume
The method for increasing the data node volume is as follows:
Increase data volume
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In the KakaoCloud Console, navigate to Beyond Compute Service > Virtual Machine > Volume menu and create a volume.
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Add the created volume to the instance.
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SSH into the instance.
# Mount the added volume to the system
sudo mkfs -t xfs /dev/vdb
sudo mkdir -p /data/vdb
sudo mount /dev/vdb /data/vdb
sudo chown ubuntu:ubuntu /data
sudo chown ubuntu:ubuntu /data/vdb
ubuntu@host-10-182-101-5:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 32G 0 32G 0% /dev
tmpfs 6.3G 700K 6.3G 1% /run
/dev/vda1 97G 21G 76G 22% /
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
/dev/vda15 105M 3.6M 101M 4% /boot/efi
/dev/vdb 500G 543M 500G 1% /data/vdb
tmpfs 6.3G 0 6.3G 0% /run/user/1000# Add the added volume to /etc/fstab
sudo lsblk -o +UUID -
Modify the data node configuration.
Add the path to dfs.datanode.data.dir in /etc/hadoop/conf/hdfs-site.xml<property>
<name>dfs.datanode.data.dir</name>
<value>/hadoop/hdfs/data,/data/vdb</value>
</property> -
Restart the data node.